Mity CPU Platforms » MityDSP-L138 (ARM9 Based Platforms)

02/10/2014

BD 02:57 PM Software Development: RE: "Using TI C64x+ IMGLIB on OMAPL138F"

Hello Naveen,
As you stated, the vision_framework demo uses the IMG_sobel_3x3_16(), which you can use to understand exactly how the IMG_sobel_3x3_16() function is called (look in file AlgorithmEdgeDetect.cpp).
Regarding the DATA_A... Bob Duke

MF 09:20 AM Software Development: RE: How to reserve EDMA for DSP

I tried modifying device-da8xx.c as describe above, but the boot process hung. Here's the relevant part of the log: Mary Frantz

02/06/2014

JC 03:21 PM Software Development: RE: How to reserve EDMA for DSP

Mary,
I think you can disable the dma usage of the spi driver. I am using the following resource declaration for a different project. Note that the dm365 is a cousin of the l138. Jonathan Cormier

MF 11:03 AM Software Development: RE: How to reserve EDMA for DSP

In researching this I found what looks like a similar problem:
http://e2e.ti.com/support/dsp/omap_applications_processors/f/42/t/308987.aspx
This discussion describes how the McBSP freezes when other EMDA accesses occur. I also no... Mary Frantz

JL 03:06 PM Software Development: Build Error when using Yocto

I am attempting to run this command to compile the kernel:
bitbake virtual/bootloader
And get the following error:
ERROR: Execution of event handler 'external_linaro_toolchain_version_handler' failed
Traceback (most recent call ... Julio Liriano

02/05/2014

AS 11:04 AM FPGA Development: I2C SMBus development

Hi All,
I can see here (http://support.criticallink.com/rm_embedded/dsp-products/MDK_DOCS/2.11/core/class_mity_d_s_p_1_1tc_dsp_i2c2.html) that there is support for I2C-SMBus. However, in MDK_2013-05-15, I couldn't find the header core... Angelos Spanos

AS 11:01 AM Software Development: RE: Latest stable linux build for MityARM-1808/F

Thanks Mike,
That did the works for me.
Cheers,
Angelos Angelos Spanos

PS 06:49 AM Software Development: RE: USB-OTG as a peripheral and a host

Hello Jonathan and Mike,
Thank you for your quick replies.
@Mike
Thank you for your suggestion. I could use it as a file system, but I am interested in transmitting data in real time continuously. In such cases, I will not be able... Preejith S P

NK 05:05 AM Software Development: "Regarding MitydspL138F Vision development kit"

Hi,
We have received your Vision Development Kit from Digikey distributor this week. As per your VDK manual we interfaced the kit with mouse, camera and Monitor (with DVI-D input). We have followed the instructions given strictly, als... Naveen K.S

02/04/2014

JC 01:50 PM Software Development: RE: Accessing SPI1 bus

Mary,
You can search the kernel source for the messages by using grep. For example I might search for the string "msb first" and look at what files are found containing that text. You could then comment out those print statements. Jonathan Cormier

MF 01:18 PM Software Development: RE: Accessing SPI1 bus

I have successfully added the SPIDEV support to the kernel and can communicate over the bus now.
I occasionally see messages on the console of the following form: Mary Frantz

MF 01:07 PM Software Development: How to reserve EDMA for DSP

I am having an ARM/DSP conflict. The DSP is primarily reading data from the McBSP and transferring the data to a circular buffer in DDR memory which is shared with the ARM. The ARM accesses it through a pointer allocated with CMEM.
T... Mary Frantz

MW 12:39 PM Software Development: RE: Latest stable linux build for MityARM-1808/F

In the "file tab":https://support.criticallink.com/redmine/projects/arm9-platforms/files there are MDK downloads (.run files). Instructions for installation are "here":https://support.criticallink.com/redmine/projects/arm9-platforms/wik... Michael Williamson

AS 12:35 PM Software Development: Latest stable linux build for MityARM-1808/F

Hi All,
Could you please tell me what is the Latest stable linux build for MityARM-1808/F? Could you also provide with a link to that?
I have seen that the latest ARM9 based platform is MDK_2013-05-15 but I couldn't find it.
Ki... Angelos Spanos

MW 08:53 AM Software Development: RE: USB-OTG as a peripheral and a host

Probably the best solution would be to load in the USB OTG file storage gadget. This will make the L138 look like a thumb drive.
This link talks about it a bit (for AM335X, but is generally a "linux" thing and should work with L138).... Michael Williamson

JC 08:33 AM Software Development: RE: USB-OTG as a peripheral and a host

Unfortunately I don't have any experience with interfacing with Android phones. If your Android phone supports rndis this may be the best way to go. Jonathan Cormier

PS 05:14 AM Software Development: RE: USB-OTG as a peripheral and a host

Hello,
I have used RNDIS and have been able to transfer data.
However, I would also like to know how to use either the *USB host* port or the *OTG port* to transfer data without setting up RNDIS.
I am trying to send data from my bo... Preejith S P

02/03/2014

SB 11:43 AM Software Development: multicast routing on mity board

Hi,
I need to set up multicast routing between two interfaces on the mity board running Angstrom linux 2.6.34
I recompiled the kernel with all multicasting options enabled, but "cat /proc/sys/net/ipv4/conf/all/mc_forwarding" gives... stephan berner

01/31/2014

NK 05:14 AM Software Development: RE: "Regarding handling UART on MitydspL138F(OMAPL138)"

Hi,
We are trying to interface Second UART (J504 as you mentioned) with Atmel AtXmega Controller so that upon receiving UART interrupts from it we need to enter in to the developed image processing functions.
Since we were told tha... Naveen K.S

01/30/2014

AB 02:22 PM Software Development: RE: "Regarding handling UART on MitydspL138F(OMAPL138)"

Naveen,
The first UART is used for the debug/console port, UART1.
You would like to use the second UART in your DSP/ARM code to trigger some processing to occur correct? On the VDK this would be the J504 connector. I have verified ... Alexander Block

AB 01:17 PM Software Development: RE: "Reagrding spi NOR flash memory updating"

Naveen,
I'm assuming that the question here is how would you get the updated Kernel from your host PC onto the MityDSP-L138 module to update the kernel in the NOR memory?
1) You are going to be executing the commands over the debug... Alexander Block

01/23/2014

MC 06:18 AM Software Development: RE: Memcpy data transfer error from FPGA address space to CMEM-allocated data buffers.

Hello Mike,
I've solved the problem! Actually it was a timing problem related to the access policy to the emif.
I eliminated the one-clock-delay due to the output flip-flop (reg_read), substituting it with a multiplexer.
Now it wor... Michele Canepa

NK 05:11 AM Software Development: "Reagrding spi NOR flash memory updating"

Hi Sir,
This is regarding editing the kernel in NOR flash memory, a detailed steps have been given in wiki for editing kernel but how to interface Mitydsp to host PC while flashing. Please help me in this regard.
Thanks in advance,... Naveen K.S

01/22/2014

MC 09:19 AM Software Development: RE: Memcpy data transfer error from FPGA address space to CMEM-allocated data buffers.

Dear Mike,
When you say to configure the emif wait states etc., you mean modifying, for example, the file "u-boot-mitydspl138/board/davinci/mityomapl138/mityomapl138.c" ?
In that file I see these configurations:
code:
emif_r... Michele Canepa

01/21/2014

EK 04:04 PM Software Development: RE: Error libstdc++.so.6

To whom this may concern!...
I had a problem with the file system... Using NFS updated the problem is solved... Ehsan Kooh

MW 07:31 AM Software Development: RE: Memcpy data transfer error from FPGA address space to CMEM-allocated data buffers.

I think you should setup a chipscope in the FPGA and watch the EMIFA transactions and see if the data is being posted to the bus per the timing specs. I don't see anything obviously wrong in your ISR code. If you have to hit each regis... Michael Williamson

MC 03:23 AM Software Development: Memcpy data transfer error from FPGA address space to CMEM-allocated data buffers.

Dear Sirs,
I have implemented a ping pong buffer to transfer via EMIF some data from a Block-RAM on FPGA to a shared memory between ARM and DSP allocated by CMEM.
RAM is filled with 16 bit samples coming from an ADC: I have "hacked" yo... Michele Canepa

01/20/2014

NK 10:30 PM Software Development: "Usage of C64X+ IMGLIB on MitydspL138F VDK frame work"

Hello Mike,
In the vision_framework example given by you it is clear that the tcAlgorithmEdgeDetect::Process() class makes use of the IMG_sobel_3x3_16() library routine to perform a basic edge detection transform.
But in order to c... Naveen K.S

NK 05:27 AM Software Development: RE: "Using TI C64x+ IMGLIB on OMAPL138F"

Hello Mike,
In the vision_framework example given by you it is clear that the tcAlgorithmEdgeDetect::Process() class makes use of the IMG_sobel_3x3_16() library routine to perform a basic edge detection transform.
But in order to c... Naveen K.S

01/17/2014

EK 05:57 PM Software Development: Error libstdc++.so.6

*Hello Dears,
Following steps on "DSP Hello World", it seems I have outputs of ARM "HelloWorldDSP.out" and DSP "HelloWorld"... but in execution, I encounter to such the error message:*
_root@mityomapl138:~# ./HelloWorld HelloWorldDSP... Ehsan Kooh